MOSCOW, May 12. /TASS/. The upcoming summit of the Collective Security Treaty Organization (CSTO), a post-Soviet security bloc, will be held in the Russian capital of Moscow on May 16, Kremlin Spokesman Dmitry Peskov told reporters on Thursday.

"A summit of the organization's member states will be held in Moscow on May 16 on the occasion of the CSTO's 30th anniversary. There will be both a meeting of the leaders and their separate interaction in a working breakfast format," he said.

CSTO Secretary General Stanislav Zas and Nikol Pashinyan, Prime Minister of Armenia, who currently chairs the organization, will make statements to the media after the event.

Earlier Peskov reported that the meeting of the CSTO leaders may touch upon the situation in Ukraine.

A bilateral meeting between Russian President Vladimir Putin and Belarusian President Alexander Lukashenko is expected to take place on the sidelines of the summit.

The CSTO is an international security organization, which currently includes six member-states: Armenia, Belarus, Kazakhstan, Kyrgyzstan, Russia and Tajikistan. On May 15, 1992 in Tashkent, the leaders of Armenia, Kazakhstan, Kyrgyzstan, Russia, Tajikistan and Uzbekistan (which is no longer a member of the CSTO since 2012) signed the treaty on the establishment of the organization. In 1993, Azerbaijan, Georgia (both countries left the CSTO in 1999) and Belarus joined the organization.